Leaders of Russia, Ukraine, France and Germany on Thursday emerged from marathon 16-hour talks to announce a comprehensive peace deal for eastern Ukraine, but questions remained whether Ukraine and the pro-Russian rebels have agreed on all of its terms.

It was a warm gesture on a chilly night when Vladimir Putin wrapped a shawl around the wife of Xi Jinping while the Chinese president chatted with Barack Obama. The only problem: Putin came off looking gallant, the Chinese summit host gauche and inattentive.

Russia unilaterally sent an aid mission into rebel-held eastern Ukraine on Friday, saying its patience had worn out after a week of delays it blamed on the Ukrainian government, which called the move a “direct invasion.”